Two specimen of Paracentrotus lividus: on the right a rare black specimen. The rare blacks specimens can be confused with Arbacia lixula but the white circular outline on the base of the spines are a features exclusive of P. lividus.]]>Echinoidea (sea urchins)SpeciesEchinodermata (Echinoderms)
]]>http://www.marinespecies.org/echinoidea/aphia.php?p=image&album=146&pic=117936&from=rss
http://www.marinespecies.org/echinoidea/aphia.php?p=image&album=146&pic=117936Sat, 03 Dec 2016 07:18:26 +0000originally identified as Brissus unicolor - a Mediterranean and Atlantic Ocean species - by the image contributor, but more likely is an Indo-Westpacific member of Brissus, possibly B. agassizii.